The Redmond giant had owned 150,935,575 shares in the firm, after making an initial $1 billion investment in Comcast in June 1997. Mighty-Soft had also owned 21.6 million shares of Comcast's Special Class A shares.

Comcast has actually done a fair bit better than its competitors throughout the credit crunch, with its shares only falling 15.7 per cent in the last year, compared to the 39.6 per cent average.